Overflow device for sewage



May 13, 1958 T. M. PAIR OVERFLOW DEVICE FOR SEWAGE ZSheets-Sheet 1 Filed Oct. 1. 1954 IN VEN TOR. 77/04/45 /I/. Pfl/R ATTOR/VEVj May 13,1958 EQM. mR 2 ,834,365

OVERFLOW DEVICE FOR SEWAGE 2 Sheets-Sheet 2 Filed Oct. 1. 1954 INVENTOR MOMS 4/ Pfl/R ATTORNEYS United States Patent OVERFLOW DEVICE FOR SEWAGE Thomas M. Pair, Birmingham, Ala.

Application October 1, 1954, Serial No. 459,586

4 Claims. (Cl. 137-24711) This invention relates to a device to provideyfor the overflow of sewageoutside a building in event the sewer line or drain serving the building should become obstructed.

An object of this invention is to provide a device adapted to be incorporated into a horizontal drain pipe or sewer line between the plumbing fixtures in a building and the main sewer and which shall be adapted upon obstruction of the sewer line beyond the device to cause sewage to overflow and be discharged where it will be noticed and can do no damage. I

A further objectof 'myinvention is to provide a device of. the character designated which shall include. a Waste receiving chamber in communication with the drain or sewer line for a building and be so disposed as to receive overflow' of sewage from plumbing fixtures, and discharge it outside the building above the level of the device.

As is well known in the art to which thy-invention relates, a sewer line serving a building, or residence, often becomes clogged or obstructed between the building and the main sewer line, causing sewage to back up in the building. Unless detected in time, toilets and other plumbing fixtures are liable to overflow and cause considerable damage. This danger is especially present where a number of residences located at different elevations, are connected to a common sewer line. Should the sewer line below the house at a lower elevation become stopped up, the plumbing fixtures in the house at the lower elevation would overflow due to the continued feeding of sewage into the sewer lines from residences at the higher elevations.

Briefly, my invention comprises a fitting embodying a cylindrical body portion having inlet and outlet connections which are adapted for incorporation directly in a sewer line or drain pipe and which provides an unobstructed through passage for sewage to the sewer line. Associated with the body portion is a waste receiving chamber and a passageway is provided through the upper wall of the cylindrical body portion into the waste receiving chamber. A discharge conduit is connected to the lower end of the waste receiving chamber, below the cylindrical body portion, and extends upwardly to discharge any overflow sewage at a level above the device. Provision is also made for a liquid seal between the body portion and the discharge conduit so that objectionable odors do not escape from the line.

A device embodying features of my invention is illustrated in the accompanying drawings, forming a part of this application, in which:

Fig. l is a plan view with parts broken away and in section;

Fig. 2 is a side view with parts broken away and in section;

Fig. 3 is a diagrammatic view showing a typical installation of my improved device outside a building;

Fig. 4 is a side view with parts broken away and in section showing a modified form;

2,834,365 Patented May 13,, 1958 Fig. 5 is an end view of the device shown in Fig. 4 with parts broken away and in section;

Fig. 6 is a plan view of Fig. 5 with parts broken away and in section; and,

Fig. 7 is a diagrammatic view showing a typical installation of my improved device inside a building.

Referring to Figs. 1 to 3 of the drawing, my improved device comprises a cylindrical body portion 10 havinga bell end 11 and a spigot end 12 which is adapted for connecting into a horizontal sewage conduit such as a sewer line. The body portion is of a diameter corresponding to that of the sewer line in which it is incorporated and provides for a through, unobstructed passage 13 for sewage.

Cast integrally with the body portion 10 is a cylindrical waste receiving chamber 14 which, as shown in Fig. 2 of the drawing extends partially above and partially below the body portion and partially surrounds the body portion, the major portion extending below the body portion 10. A passage 17 in the upper wall of the body portion 10 connects. the passageway 13 with the waste receiving chamber 14. A plurality of small holes 18 .extend through the side of the body portion 10. into the waste receiving chamber, in order to provide a liquid seal1in the device during normal operating conditions.

Atrthe lower end of the waste receiving chamber 14 is a. discharge opening 19 with an elbow portion 21 connected thereto which is threaded to receive a discharge conduit22'which terminates at a level above the device, as-may be seen in Fig. 3. In the modification shown in Figs. 1 to 3 of the drawings, the upper end of the waste receiving chamber is. threaded to receive a cleanout plug 23..

' The device shown in Figs. 1 to 3 of the drawing may be installed directly in the horizontal sewage conduit 24 for the building as shown in Fig. 3 and has its discharge pipe 22 extending above the ground level indicated at 26. In Fig. 3, the building is indicated at 27 with the usual plumbing fixtures indicated at 28, 2% and 31, connected through suitable drain connections 32, 33 and 34 to the sewer line 24. Referring now to Figs. 4, 5 and 6, I show a modified form of my invention which is better adapted for use with single residences occupied by a few tenants. In general, the features shown in this modification are similar to those already described. The fitting comprises a cylindrical body portion 41 having inlet and outlet connections 42 and 43 arranged to be disposed in a horizontal portion of a drain conduit. The waste receiving chamber surrounds the tubular body portion and comprises an upper end 44 extending somewhat above the body portion 41 and a lower portion 46 extending a considerable distance below the body portion. An overflow passage 47 is provided from the body portion 41 into the waste receiving chamber 46. Small holes 48 are provided in the bottom wall of the tubular portion 41 and empty into the lower end 46 of the waste receiving chamber for maintaininga water seal during normal operation. The discharge connection is shown at 49 in the lower end of the waste receiving chamber. In accordance with this modification a clean-out plug St? is provided in the lower end of the waste receiving chamber.

In Fig. 7 of the drawing I show a typical installation utilizing the modification of my invention shown in Fig. 5. My improved fitting is preferably installed in a hori zontal portion 51 of a drain conduit ahead of the sewer line 52 and preferably in the basement of the building. A plumbing fixture such as a bath, shown at 53, discharges waste through suitable connections into the conduit 51 and thence into the sewer 52. A discharge pipe 57 is connected to the discharge connection 49 of the fitting and leads upwardly to a pipe 58 above the level of the fitting and discharges outside the building onto the ground through a connection 59.

From the foregoing it will be apparent that I have devised an improved overflow device for sewage which is simple and economical of design and reliable of operation and one which is effective to prevent sewage from backing up and overflowing into a building when the sewer line serving the building is obstructed.

While I have shown my invention in but two forms it will be obvious to those skilled in the art that it is not so limited but is susceptible of various other changes and modifications without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are specifically set forth in the appended claims.

What I claim is:

1. An overflow device for sewage comprising a cylindrical body portion having inlet and outlet portions adapted to be horizontally disposed and connected into a sewage conduit, a waste receiving chamber formed integrally with and surrounding said body portion a major part of which extends below the said body portion, and a minor part above said body portion, overflow passage means through the upper wall of the body portion into the waste receiving chamber, and a discharge outlet in the lower end of the waste receiving chamber.

2. An overflow device for sewage comprising a cylindrical body portion having inlet and outlet portions adapted to be horizontally disposed and connected into a sewage conduit, a waste receiving chamber formed integrally with and surrounding said body portion, a major part of which extends below the said body portion and a minor part above said body portion, overflow passage means through the upper wall of the body portion into the waste receiving chamber, a discharge outlet in the lower end of the waste receiving chamber and a discharge conduit connected to the discharge outlet and terminating at a level above the device.

3. An overflow device for sewage comprising a cylindrical body portion having inlet and outlet connections adapted to be horizontally disposed and connected into a sewage conduit, means forming a waste receiving cham ber alongside and extending partially above and partially below the body portion, an overfiow passageway formed in the upper part of the body portion and communicating with the waste receiving chamber, a waste discharge conduit connected to the lower end of the waste receiving chamber and extending above the level of. the device, and relatively small passageways through the wall of the cylindrical body portion in communication with the Waste receiving chamber providing a water seal during normal operation.

4. An overflow device for sewage comprising a cylindrical body portion having inlet and outlet portions adapted to be horizontally disposed and connected into a sewage conduit, a waste receiving chamber formed integrally with and surrounding said body portion, a major part of which extends below said body portion and a minor part above said body portion, overflow passage means through the upper wall of the body portion into the waste receiving chamber, a discharge outlet in the lower end of the waste receiving chamber, and passageways through the lower wall of the body portion in communication with the waste receiving chamber to maintain a water seal.

References Cited in the file of this patent UNITED STATES PATENTS 271,110 Pabst Jan. 23, 1883 2,431,640 Gordon Nov. 25, 1947 2,739,662 Sofia Mar. 27, 1956 FOREIGN PATENTS 631,762 Germany June 26, 1936 

